Up-firing needs a ceiling; in-ceiling needs a drill · review
A height module pair with a 5.25 inch woofer and a Terylene dome tweeter, for seven-channel receivers.
In brief
A 5.25 inch woofer with the arithmetic published alongside it, and the only brand here that tells you how many receiver channels you need. Four hundred and forty-nine dollars for the thoroughest listing on the shelf. Key figures: Atmos height module pair · 1 in Terylene tweeter, 5.25 in midrange · 75% more cone area than a 4 in driver, per Polk. Amazon.com had an offer at $449 on October 25, 2026.
A 4 or 8-ohm A/V receiver with a minimum of seven channels.
Polk is the only brand on this shelf that publishes it — here and on its XT90 at $99.50. Not Klipsch’s three models, not Sony, not JBL, not ELAC, not either SVS.
And it is the fact most likely to stop you using a height pair at all.
A height pair needs two amplifier channels of its own, on top of the five already driving left, center, right and two surrounds. So a 5.1 receiver has nowhere to wire these. You need at least 7.1, and a receiver that decodes Atmos and lets you assign those two channels as height.
A 5.25” woofer… offers 75% more surface area than typical 4” drivers.
The arithmetic: radiating area goes as the square of the radius, so (5.25 ÷ 4)² = 1.72. That is 72 percent more, against 75 claimed.
The three-point gap is inside the slack of nominal driver sizing — a “4-inch” driver’s actual radiating diameter depends on where the surround ends. Call the claim honest.
And the point is the right one to make. Cone area is what moves air. Seventy-two percent more of it means lower reach before the driver runs out of excursion, and less distortion at the same loudness.
On this shelf, only Klipsch’s RP-500SA at $299 matches the 5.25 inches. Most products here use 4 inches (Klipsch R-41SA, Polk XT90, ELAC A4.2), 4.5 (JBL, SVS Prime) or 3.94 (Sony).
Tweeter domes split into two families, and this shelf has both.
Hard domes — aluminum, titanium — stay rigid to very high frequencies and usually measure as extending further. Their resonance above the audible band is sharp, and can color the top end if the crossover does not suppress it. Klipsch, JBL and SVS all use hard domes here.
Soft domes — silk, textile, polyester films such as Terylene — are self-damping. The resonance is spread and gentle, which many listeners hear as smoother and less fatiguing, at some cost in ultimate extension.
Polk is the only soft dome on this shelf.
Combining this module with Polk Signature Elite ES20, ES55 & ES60, or S20, S55 & S60… common driver technologies in these speakers provide a cohesive soundstage.
This is a real acoustic argument, not just a cross-sell. An Atmos effect often pans from a front speaker up to a height speaker — a jet crossing overhead. If the two use different drivers, the sound changes tone as it travels and the illusion breaks.
Polk names the models. Sony does the same. Klipsch says only “compatible bookshelf or floorstanding speakers”.
No crossover switch. Two products here have one — Klipsch’s RP-500SA and the JBL — because firing at a ceiling needs more treble than firing at a listener, and one fixed setting compromises between them. This module is sold explicitly for ceiling-bounce placement with a single setting.
No horn or waveguide. Klipsch publishes a 90° × 90° Tractrix horn, JBL an HDI horn, ELAC a concentric driver — all three aiming the energy at the patch of ceiling that reflects toward the sofa. Polk publishes none, so nothing is stated about where the treble goes.
No power handling, where Klipsch gives 50 W continuous and 100 W peak at $199.
No mounting hardware for this model, where Polk’s own XT90 publishes keyhole slots and SVS ships a multi-angle bracket rated for ceiling use.
3,800 g is published — the heaviest figure on this shelf.
Prices quoted in this text were read on October 4, 2026. The live price is at the top of the page.
Amazon.com lists this model (ASIN B0CGZ4MVB5) and had an offer at $449 on October 25, 2026. The price box on this page is refreshed live and takes precedence over that figure.
| Woofer | 5.25 in mica-fortified polypropylene — about 72% more cone area than a 4 in |
|---|---|
| The maker’s claim | 75% more surface area than typical 4 in drivers — the arithmetic gives 72% |
| Tweeter | 1 in Terylene dome |
| Formats | Dolby Atmos, DTS:X and IMAX Enhanced |
| Receiver needed | A minimum of SEVEN channels, 4 or 8 ohm — published |
| Architecture | Ceiling-bounce: placed atop Signature tower or bookshelf speakers |
| Timbre matching | Stated matched to Polk ES20, ES55, ES60, S20, S55 and S60 |
| Enhances | 2.1 and 5.1 channel soundtracks, stated |
| Weight | 8.4 lb (3.8 kg) — the heaviest published here |
| Dimensions | 12 × 7.40 × 7.28 in (305 × 188 × 185 mm) |
| Crossover switch | None, where the Klipsch RP-500SA and the JBL have one |
| Power handling | Not published |
| Horn or waveguide | None published |
| Mounting hardware | Not published for this model |
| Amazon reference | B0CGZ4MVB5 |
| EAN | 0747192140953 |
Near enough, and it is a fair way to put it. Polk publishes a "5.25" mica-fortified polypropylene midrange woofer" offering "75% more surface area than typical 4" drivers". Check it: the radiating area of a cone goes as the square of the radius, so the ratio is (5.25 ÷ 4)² = 1.72 — that is 72 percent more, against 75 claimed. The three-point gap is within the slack of nominal driver sizing, where a "4-inch" driver’s actual radiating diameter varies with the surround. And the point itself is sound: cone area is what moves air, so 72 percent more of it means lower reach before the driver runs out and less distortion at the same level. Klipsch’s RP-500SA uses the same 5.25 inches at $299; most of this shelf uses 4 inches or less.
Because without the channels the speakers cannot be connected at all, and Polk is the only brand on this shelf that says so. The bullet reads: "paired with a 4 or 8-ohm A/V receiver with a minimum of seven channels". A height pair needs two amplifier channels of its own, on top of the five already driving left, center, right and two surrounds. So a 5.1 receiver has no spare channels — there is physically nowhere to wire these. You need 7.1 at least, plus a receiver that decodes Atmos and lets you assign those two channels as height or top-front. Polk publishes it on both its listings here; Klipsch’s three, Sony, JBL, ELAC and both SVS models do not state it anywhere.
A polyester-film dome, and it sits on the soft side of a long-standing choice. Tweeter domes divide into hard materials — aluminum, titanium, beryllium, which is what Klipsch, JBL and SVS use here — and soft ones, silk, textile and polyester films like Terylene. A hard dome is stiff, so it stays rigid to a very high frequency and typically measures as extending further; its drawback is that it has a sharp resonance above the audible band which can audibly color the top end if the crossover does not suppress it. A soft dome is self-damping: the resonance is spread and gentle, which many listeners describe as smoother and less fatiguing, at the cost of some ultimate extension. On this shelf, Polk alone uses a soft dome.
A Polk Signature system where the receiver has the channels — the specification is published in full
Specifications: the manufacturer sheet and the matching Amazon product page. Prices and availability: Keepa. Every figure on this page names its source.
Atmos height module pair · concentric driver, 0.5 in tweeter and 4 in aramid woofer
A Dolby Atmos module pair with a concentric driver: a 0.5 inch tweeter inside a 4 inch woofer.
Best for: A ceiling bounce done properly — one source point instead of two
≈ $279
Dolby Atmos height module pair with a 4.5 inch polycellulose ribbed-cone woofer, a 1 inch anodized aluminum tweeter on a next-generation HDI horn, a precision two-way crossover and switchable modes for Dolby Atmos or surround and height use
An Atmos height module pair with a 4.5 inch woofer, an HDI horn and switchable modes.
Best for: A Stage 2 system wanting a switchable module with a horn-loaded tweeter
≈ $260
Dolby Atmos enabled elevation speaker stated to add Dolby Atmos to an existing floorstanding or bookshelf speaker, with no driver sizes, power handling or impedance published
A Dolby Atmos enabled elevation speaker, published without driver sizes or power handling.
Best for: Nothing on this shelf that the better-documented Klipsch at $199 does not do
≈ $239
